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Edit File : policydb.h \| Size : 4.58 KB
#ifndef _SEPOL_POLICYDB_H_ #define _SEPOL_POLICYDB_H_ #include <stddef.h> #include <stdio.h> #include <sepol/handle.h> #ifdef __cplusplus extern "C" { #endif struct sepol_policy_file; typedef struct sepol_policy_file sepol_policy_file_t; struct sepol_policydb; typedef struct sepol_policydb sepol_policydb_t; /* Policy file public interfaces. / / Create and free memory associated with a policy file. / extern int sepol_policy_file_create(sepol_policy_file_t * pf); extern void sepol_policy_file_free(sepol_policy_file_t * pf); /* * Set the policy file to represent a binary policy memory image. * Subsequent operations using the policy file will read and write * the image located at the specified address with the specified length. * If 'len' is 0, then merely compute the necessary length upon * subsequent policydb write operations in order to determine the * necessary buffer size to allocate. / extern void sepol_policy_file_set_mem(sepol_policy_file_t pf, char data, size_t len); / * Get the size of the buffer needed to store a policydb write * previously done on this policy file. / extern int sepol_policy_file_get_len(sepol_policy_file_t pf, size_t * len); /* * Set the policy file to represent a FILE. * Subsequent operations using the policy file will read and write * to the FILE. / extern void sepol_policy_file_set_fp(sepol_policy_file_t pf, FILE * fp); /* * Associate a handle with a policy file, for use in * error reporting from subsequent calls that take the * policy file as an argument. / extern void sepol_policy_file_set_handle(sepol_policy_file_t pf, sepol_handle_t * handle); /* Policydb public interfaces. / / Create and free memory associated with a policydb. / extern int sepol_policydb_create(sepol_policydb_t * p); extern void sepol_policydb_free(sepol_policydb_t * p); /* Legal types of policies that the policydb can represent. / #define SEPOL_POLICY_KERN 0 #define SEPOL_POLICY_BASE 1 #define SEPOL_POLICY_MOD 2 / * Range of policy versions for the kernel policy type supported * by this library. / extern int sepol_policy_kern_vers_min(void); extern int sepol_policy_kern_vers_max(void); / * Set the policy type as specified, and automatically initialize the * policy version accordingly to the maximum version supported for the * policy type. * Returns -1 if the policy type is not legal. / extern int sepol_policydb_set_typevers(sepol_policydb_t p, unsigned int type); /* * Set the policy version to a different value. * Returns -1 if the policy version is not in the supported range for * the (previously set) policy type. / extern int sepol_policydb_set_vers(sepol_policydb_t p, unsigned int vers); /* Set how to handle unknown class/perms. / #define SEPOL_DENY_UNKNOWN 0 #define SEPOL_REJECT_UNKNOWN 2 #define SEPOL_ALLOW_UNKNOWN 4 extern int sepol_policydb_set_handle_unknown(sepol_policydb_t p, unsigned int handle_unknown); /* Set the target platform / #define SEPOL_TARGET_SELINUX 0 #define SEPOL_TARGET_XEN 1 extern int sepol_policydb_set_target_platform(sepol_policydb_t p, int target_platform); /* * Read a policydb from a policy file. * This automatically sets the type and version based on the * image contents. / extern int sepol_policydb_read(sepol_policydb_t p, sepol_policy_file_t * pf); /* * Write a policydb to a policy file. * The generated image will be in the binary format corresponding * to the policy version associated with the policydb. / extern int sepol_policydb_write(sepol_policydb_t p, sepol_policy_file_t * pf); /* * Extract a policydb from a binary policy memory image. * This is equivalent to sepol_policydb_read with a policy file * set to refer to memory. / extern int sepol_policydb_from_image(sepol_handle_t handle, void data, size_t len, sepol_policydb_t p); /* * Generate a binary policy memory image from a policydb. * This is equivalent to sepol_policydb_write with a policy file * set to refer to memory, but internally handles computing the * necessary length and allocating an appropriately sized memory * buffer for the caller. / extern int sepol_policydb_to_image(sepol_handle_t handle, sepol_policydb_t * p, void *newdata, size_t newlen); /* * Check whether the policydb has MLS enabled. / extern int sepol_policydb_mls_enabled(const sepol_policydb_t p); /* * Check whether the compatibility mode for SELinux network * checks should be enabled when using this policy. / extern int sepol_policydb_compat_net(const sepol_policydb_t p); #ifdef __cplusplus } #endif #endif Back

Edit File : policydb.h | Size : 4.58 KB

#ifndef _SEPOL_POLICYDB_H_
#define _SEPOL_POLICYDB_H_

#include <stddef.h>
#include <stdio.h>

#include <sepol/handle.h>

#ifdef __cplusplus
extern "C" {
#endif

struct sepol_policy_file;
typedef struct sepol_policy_file sepol_policy_file_t;

struct sepol_policydb;
typedef struct sepol_policydb sepol_policydb_t;

/* Policy file public interfaces. */

/* Create and free memory associated with a policy file. */
extern int sepol_policy_file_create(sepol_policy_file_t ** pf);
extern void sepol_policy_file_free(sepol_policy_file_t * pf);

/*
 * Set the policy file to represent a binary policy memory image.
 * Subsequent operations using the policy file will read and write
 * the image located at the specified address with the specified length.
 * If 'len' is 0, then merely compute the necessary length upon  
 * subsequent policydb write operations in order to determine the
 * necessary buffer size to allocate.
 */
extern void sepol_policy_file_set_mem(sepol_policy_file_t * pf,
				      char *data, size_t len);

/*
 * Get the size of the buffer needed to store a policydb write
 * previously done on this policy file.
 */
extern int sepol_policy_file_get_len(sepol_policy_file_t * pf, size_t * len);

/*
 * Set the policy file to represent a FILE.
 * Subsequent operations using the policy file will read and write
 * to the FILE.
 */
extern void sepol_policy_file_set_fp(sepol_policy_file_t * pf, FILE * fp);

/*
 * Associate a handle with a policy file, for use in
 * error reporting from subsequent calls that take the
 * policy file as an argument.
 */
extern void sepol_policy_file_set_handle(sepol_policy_file_t * pf,
					 sepol_handle_t * handle);

/* Policydb public interfaces. */

/* Create and free memory associated with a policydb. */
extern int sepol_policydb_create(sepol_policydb_t ** p);
extern void sepol_policydb_free(sepol_policydb_t * p);

/* Legal types of policies that the policydb can represent. */
#define SEPOL_POLICY_KERN	0
#define SEPOL_POLICY_BASE	1
#define SEPOL_POLICY_MOD	2

/*
 * Range of policy versions for the kernel policy type supported
 * by this library.
 */
extern int sepol_policy_kern_vers_min(void);
extern int sepol_policy_kern_vers_max(void);

/*
 * Set the policy type as specified, and automatically initialize the
 * policy version accordingly to the maximum version supported for the
 * policy type.  
 * Returns -1 if the policy type is not legal.
 */
extern int sepol_policydb_set_typevers(sepol_policydb_t * p, unsigned int type);

/*
 * Set the policy version to a different value.
 * Returns -1 if the policy version is not in the supported range for
 * the (previously set) policy type.
 */
extern int sepol_policydb_set_vers(sepol_policydb_t * p, unsigned int vers);

/* Set how to handle unknown class/perms. */
#define SEPOL_DENY_UNKNOWN	    0
#define SEPOL_REJECT_UNKNOWN	    2
#define SEPOL_ALLOW_UNKNOWN	    4
extern int sepol_policydb_set_handle_unknown(sepol_policydb_t * p,
					     unsigned int handle_unknown);

/* Set the target platform */
#define SEPOL_TARGET_SELINUX 0
#define SEPOL_TARGET_XEN     1
extern int sepol_policydb_set_target_platform(sepol_policydb_t * p,
					     int target_platform);

/* 
 * Read a policydb from a policy file.
 * This automatically sets the type and version based on the 
 * image contents.
 */
extern int sepol_policydb_read(sepol_policydb_t * p, sepol_policy_file_t * pf);

/*
 * Write a policydb to a policy file.
 * The generated image will be in the binary format corresponding 
 * to the policy version associated with the policydb.
 */
extern int sepol_policydb_write(sepol_policydb_t * p, sepol_policy_file_t * pf);

/*
 * Extract a policydb from a binary policy memory image.  
 * This is equivalent to sepol_policydb_read with a policy file
 * set to refer to memory.
 */
extern int sepol_policydb_from_image(sepol_handle_t * handle,
				     void *data, size_t len,
				     sepol_policydb_t * p);

/*
 * Generate a binary policy memory image from a policydb.  
 * This is equivalent to sepol_policydb_write with a policy file
 * set to refer to memory, but internally handles computing the 
 * necessary length and allocating an appropriately sized memory
 * buffer for the caller.  
 */
extern int sepol_policydb_to_image(sepol_handle_t * handle,
				   sepol_policydb_t * p,
				   void **newdata, size_t * newlen);

/* 
 * Check whether the policydb has MLS enabled.
 */
extern int sepol_policydb_mls_enabled(const sepol_policydb_t * p);

/*
 * Check whether the compatibility mode for SELinux network
 * checks should be enabled when using this policy.
 */
extern int sepol_policydb_compat_net(const sepol_policydb_t * p);

#ifdef __cplusplus
}
#endif

#endif

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